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23250431 = 292832833
BaseRepresentation
bin101100010110…
…0010111111111
31121202020121002
41120230113333
521423003211
62150200515
7401424341
oct130542777
947666532
1023250431
1112140436
12795313b
134a80a69
143133291
15209403b
hex162c5ff

23250431 has 8 divisors (see below), whose sum is σ = 24145680. Its totient is φ = 22361472.

The previous prime is 23250421. The next prime is 23250439. The reversal of 23250431 is 13405232.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23250431 - 222 = 19056127 is a prime.

It is a super-2 number, since 2×232504312 = 1081165083371522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23250439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6791 + ... + 9623.

It is an arithmetic number, because the mean of its divisors is an integer number (3018210).

Almost surely, 223250431 is an apocalyptic number.

23250431 is a deficient number, since it is larger than the sum of its proper divisors (895249).

23250431 is a wasteful number, since it uses less digits than its factorization.

23250431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3145.

The product of its (nonzero) digits is 720, while the sum is 20.

The square root of 23250431 is about 4821.8700729074. The cubic root of 23250431 is about 285.4151372879.

Adding to 23250431 its reverse (13405232), we get a palindrome (36655663).

The spelling of 23250431 in words is "twenty-three million, two hundred fifty thousand, four hundred thirty-one".

Divisors: 1 29 283 2833 8207 82157 801739 23250431